HOT-RUNNER SYSTEM HAVING CONTROLLER TO DETERMINE MOVEMENT OF VALVE STEMS

摘要

Hot-runner system (100), including: valve stems (104) being movable between an opened position and a closed position; a pressurized-air circuit (108); an actuator assembly (106) being coupled with valve stems (104), actuator assembly (106) being actuatable via pressurized-air circuit (108), so that valve stems (104) are movable responsive to a change in pressurization in pressurized-air circuit (108); a transducer assembly (110) being coupled with pressurized-air circuit (108), transducer assembly (110) being configured to provide an output signal indicating an amount of pressure in pressurized-air circuit (108); and a controller (112) being coupled with transducer assembly (110), and controller (112) having a controller-usable medium (314) embodying instructions (316) being executable by controller (112), instructions (316) being configured to: direct controller (112) to determine movement of valve stems (104) based on output signal provided by transducer assembly (110).